15-6-47(b). Alternate jurors. The court may direct that not more than six jurors in addition to the regular jury be called and impaneled to sit as alternate jurors. Alternate jurors in the order in which they are called shall replace jurors who, prior to the time the jury retires to consider its verdict, become or are found to be unable or disqualified to perform their duties. Alternate jurors shall be drawn in the same manner, shall have the same qualifications, shall be subject to the same examination and challenges, shall take the same oath, and shall have the same functions, powers, facilities, and privileges as the regular jurors. An alternate juror who does not replace a regular juror shall be discharged after the jury retires to consider its verdict. Each side is entitled to one peremptory challenge in addition to those otherwise allowed by law if one or two alternate jurors are to be impaneled, two peremptory challenges if three or four alternate jurors are to be impaneled, and three peremptory challenges if five or six alternate jurors are to be impaneled. The additional peremptory challenges may be used against an alternate juror only and the other peremptory challenges allowed by law shall not be used against an alternate juror. The court may for good cause excuse a juror from service during trial or deliberation.

Source: SDC 1939 & Supp 1960, § 33.1327; SD RCP, Rule 47 (b), as adopted by Sup. Ct. Order March 29, 1966, effective July 1, 1966; as amended by Sup. Ct. Order No. 2, March 31, 1969, effective July 1, 1969; SL 2006, ch 316 (Supreme Court Rule 06-42), eff. July 1, 2006.